Relation between the Friction Angle of Sand at Triaxial Compression and Triaxial Extension and Plane Strain Condition

Zenon Szypcio


The strength of sand is usually characterized by the maximum value of the secant friction angle. The friction angle is a function of deformation mode, density, and stress level and is strongly correlated with dilatancy at failure. Most often, the friction angle is evaluated from results of conventional compression tests, and correlation between the friction angle of sand at triaxial compression and triaxial extension and plane strain conditions is a vital problem of soil mechanics. These correlations can be obtained from laboratory test results. The failure criteria for sand presented in literature also give the possibility of finding correlations between friction angles for different deformation modes. The general stress-dilatancy relationship obtained from the frictional state concept, with some additional assumptions, gives the possibility of finding theoretical relationships between the friction angle of sand at triaxial compression and triaxial extension and plane strain conditions. The theoretically obtained relationships presented in the paper are fully consistent with theoretical and experimental findings of soil mechanics
Author Zenon Szypcio (FCEE / DGSM)
Zenon Szypcio,,
- Department of Geotechnics and Structural Mechanics
Journal seriesGeosciences, [Geosciences (Switzerland)], ISSN 2076-3263, e-ISSN 2076-3263, (N/A 70 pkt)
Issue year2020
Publication size in sheets0.5
Article number29
Keywords in Englishsands; friction angle; stress-dilatancy
ASJC Classification1900 General Earth and Planetary Sciences
Internal identifierROC 19-20
Languageen angielski
LicenseJournal (articles only); published final; Uznanie Autorstwa (CC-BY); with publication
Score (nominal)70
Score sourcejournalList
ScoreMinisterial score = 70.0, 12-02-2020, ArticleFromJournal
Publication indicators Scopus SNIP (Source Normalised Impact per Paper): 2018 = 0.823
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